Product Description
O-ring
Frequently Asked Questions
Q: What is the HL JE-137 o-ring used for in pallet jack hydraulics?
A: The HL JE-137 is an elastomer o-ring seal that creates a pressure-tight seal in hydraulic cylinder rod and cap areas. It prevents hydraulic fluid from leaking past the cylinder rod during lift and lower operations, maintaining system pressure and preventing fluid loss.
Q: What material composition is the HL JE-137 o-ring?
A: The HL JE-137 is typically made from nitrile (NBR) or similar synthetic elastomer. Nitrile provides excellent compatibility with mineral-based hydraulic oils, maintains flexibility across standard operating temperatures, and offers strong resistance to wear and extrusion in pressurized applications.
Q: How often should the HL JE-137 o-ring be replaced?
A: Replace the HL JE-137 when hydraulic fluid begins leaking from the cylinder rod, the ring shows visible cracks or hardening, or when performing preventive maintenance on hydraulic cylinders. Ozone, UV exposure, and extreme temperatures can degrade o-ring material over time. Replace as part of a complete seal kit service.
Q: Does the HL JE-137 o-ring come in a seal kit?
A: The HL JE-137 may be available as an individual component or as part of a complete seal kit that includes matching scraper rings, backup rings, and other sealing components. Check your cylinder model requirements to determine if you need individual rings or a complete kit for proper sealing performance.
